3979887730 has 128 divisors (see below), whose sum is σ = 9014294016. Its totient is φ = 1231718400.

The previous prime is 3979887643. The next prime is 3979887749. The reversal of 3979887730 is 377889793.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12023665 + ... + 12023995.

It is an arithmetic number, because the mean of its divisors is an integer number (70424172).

Almost surely, 2^3979887730 is an apocalyptic number.

3979887730 is an abundant number, since it is smaller than the sum of its proper divisors (5034406286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3979887730 is a wasteful number, since it uses less digits than its factorization.

3979887730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 16003008, while the sum is 61.

The square root of 3979887730 is about 63086.3513765062. The cubic root of 3979887730 is about 1584.7360604996.

The spelling of 3979887730 in words is "three billion, nine hundred seventy-nine million, eight hundred eighty-seven thousand, seven hundred thirty".